What is the voltage limitation for Class 2 circuits?

The voltage limitation for Class 2 circuits is 30 volts. Class 2 circuits are defined by the National Electrical Code (NEC) and are designed to operate at low voltage levels to reduce the risk of electrical shock and fire hazards. These circuits typically handle power and communication applications such as telephone systems, fire alarms, and some types of control systems.

While Class 1 circuits can handle higher voltage levels, Class 2 is specifically capped at 30 volts to ensure safety and compliance with installation requirements. The established limit is intended for use in common low-voltage applications, allowing for the safe installation and operation of various low-voltage equipment without requiring extensive protective measures. Therefore, understanding the correct voltage limitation is crucial for anyone working with low voltage communication systems, as it directly impacts the design, installation, and maintenance of these systems according to electrical code standards.